Mathematics
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    arccos0.917
    arccos0.87138563
    sin20.53
    cos20.53
    cos12.65
    arctan0.2245
    cos20.53
    tan13.48
    arctan0.3745
    cos12.7325
    cos13.48
    cos13.3
    cos13.4
    cos13.6
    cos13.5
    cos13.49984
    cos13.48484
    cos13.49484
    cos13.49584
    cos13.4958

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